Dozens of parents tried to scale the school fence to get inside but were force back by police officers trying to regain control and restore calm.

Police dogs were also deployed.

South Yorkshire Police later revealed that one student suffered minor injuries and that the incident was ';quickly resolved’ but officers had remained in Fir Vale for some time afterwards for ‘reassurance’.

Head teacher Simon Hawkins said: “‪School is open tomorrow as usual. We are working closely with the police who have a high profile in the community tonight and who will be in school tomorrow.

“Pupil assemblies with police are scheduled to reinforce our values and expectations.”